2018 MERCEDES-BENZ C CLASS spare wheel

Warning lamp ................................. 261
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 69
Exhaust
see Exhaust pipe
Exhaust check ................................... 165
Exhaust pipe
Cleaning ......................................... 313
Exterior lighting
Cleaning ......................................... 312
Setting options .............................. 113
see Lights
Exterior mirrors
Adjusting ....................................... 108
Dipping (automatic) ....................... 109
Folding in/out (automatically) .......1 09
Folding in/out (electrically) ........... 109
Out of position (troubleshooting) ... 109
Setting ........................................... 109
Storing settings (memory func-
tion) ............................................... 111
Storing the parking position .......... 110
Eyeglasses compartment ................. 281
F
Favorites
Overview ........................................ 273
Features ............................................. 289
Filler cap
see Refueling
Flat tire
Changing a wheel/mounting the
spare wheel ................................... 352
MOExtended tires .......................... 318
Preparing the vehicle ..................... 317
TIREFIT kit ...................................... 319
Floormats ........................................... 302
Frequencies
Mobile phone ................................. 359
Two-way radio ................................ 359
Front wheel arch
Removing/installing the cover ....... 119
Front wheel arch cover
Installing/removing ....................... 119
Front-passenger seat
see Seat Fuel
Additives ........................................ 363
Consumption statistics .................. 215
Diesel ............................................ 363
Displaying the current consump-
tion ................................................ 215
Displaying the range ...................... 215
Driving tips .................................... 164
Fuel gauge ....................................... 37
Grade (gasoline) ............................ 362
Important safety notes .................. 362
Low outside temperatures ............. 364
Problem (malfunction) ................... 158
Quality (diesel) ............................... 363
Refueling ........................................ 155
Tank content/reserve fuel ............. 362
Fuel filler flap
Closing ........................................... 157
Fuel filter (display message) ............ 246
Fuel level
Calling up the range (on-board
computer) ...................................... 215
Fuel tank
Capacity ........................................ 362
Problem (malfunction) ................... 158
Fuses
Allocation chart ............................. 332
Before changing ............................. 331
Dashboard fuse box ....................... 331
Fuse box in the engine compart-
ment .............................................. 331
Fuse box in the front-passenger
footwell .......................................... 331
Fuse box in the trunk ..................... 332
Important safety notes .................. 330
G
G-Meter (on-board computer,
Mercedes-AMG vehicles) .................. 226
Garage door opener
Clearing the memory ..................... 302
General notes ................................ 299
Important safety notes .................. 300
Opening/closing the garage doo r..3 02
Problems when programming ........3 01
Programming (button in the rear-
view mirror) ................................... 300
12Index

Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
!Vehicles with steel wheels: if you mount
snow chains on steel wheels, you may dam-
age the hub caps. Remove the hub caps from
the relevant wheels before mounting the
snow chains.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specially approved for your vehicle by
Mercedes-Benz, or are of a corresponding
standard of quality. For more information,
please contact a qualified specialist workshop.
If you intend to mount snow chains, please bear
the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Observe the infor-
mation regarding permitted wheel/tire com-
binations (
Ypage 357).
ROnly use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to a road that is not snow-covered.
RLocal regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains.
RDo not exceed the maximum permissible
speed of 31 mph (50 km/h).
ROn vehicles with AIRMATIC, you must drive at
raised vehicle level if snow chains have been
installed (
Ypage 182).
RYou must never use Parking Pilot (Ypage 184)
when snow chains are installed. You may wish to deactivate ESP
®when pulling
away with snow chains installed:
RAll vehicles (except Mercedes ‑AMG vehicles)
(Ypage 70)
RMercedes‑AMG vehicles (Ypage 71)
You can thereby allow the wheels to spin in a
controlled manner, achieving an increased driv- ing force (cutting action).
Tire pressure
Tire pressure specifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
The data on the Tire and Loading Information
placard and tire pressure table shown here are
examples. Tire pressure specifications are vehi-
cle-specific and may deviate from the data
shown here. The tire pressure specifications
that are valid for your vehicle can be found on
the Tire and Loading Information placard and
tire pressure table on the vehicle.
336Tire pressure
Wheels and tires

RCheck the tire for foreign objects.
RCheck whether the wheelislosing air or the
valve isleaking.
If you are unab leto rectify the damage, con-
tact a qualified specialist workshop.
GWARNING
If you fit unsuitab leaccessories onto tire
valves, the tire valves may beoverloaded and
malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result intire pressure loss. There isa
risk of an acc ident.
Only screw the standard valve cap or other
valve caps approved byMercedes-Benz for
your veh icleonto the tire valve.
Use a suitable pressure gauge to check the tire
pressure. The outer appearance of a tire does
not permit any reli ableconclusion about the tire
pressure. On veh iclesequipp edwith the elec-
tronic tire pressure monitor, the tire pressure
can bechecked inthe on-board computer.
The tire temperature and pressure increase
when the veh icle is inmotion. This isdependent
on the driving speed and the load.
Therefore, you should only correct tire pres-
sures when the tires are co ld.
The tires are co ld:
Rifthe veh iclehas been parked with the tires
out of direct sunlight for at least three hours
and
Rif the veh iclehas not been driven further than
1 mile (1.6 km)
The tire temperature changes dependin g on the
outside temperature, the veh iclespeed and the
tire load. Ifthe tire temperature changes by
18 ‡ (1
0 †), the tire pressure changes
by
approximate ly10 kPa (0.1 bar/1.5 psi). Take
th is into account when checking the pressure of
warm tires. Only correct the tire pressure if it is
too low for the current operating conditions. If
you check the tire pressure when the tires are
warm, the resulting value will behigher than if
the tires were co ld.This isnormal. Do not
reduce the tire pressure to the value specifie d
for co ldtires. The tire pressure would otherwise
be too low. Observe the recommended tire pressures for
cold tires:
Ron the Tire and Loading Information placard
on the B-pillar on the driver's
side
Rinthe tire pressure tab leon the fuel filler flap
(Ypage 156)
Underinflated or overinflated tires
Underinflated tires
GWARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition, they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires may:
Roverheat, leading to tire defects
Radversely affect handling
Rwear excessively and/or uneven ly
Rhave anadverse effect on fuel consumption
Overinflated tires
GWARNING
Tires with excessively high pressure can burst
because they are damaged more easily by
road debris, potholes etc. In addition, they
also suffer from irregular wear, which can
severe lyimpair the braking properties and the
driv ing characteristics. There is a risk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires may:
Rincrease the braking distance
Radversely affect handling
Rwear excessively and/or uneven ly
Rhave anadverse effect on ride comfort
Rbe more susceptible to damage
338Tire pressure
Wheels and tires

Uniform Tire Quality Grading Standards
A uniform standard to grade the quality of tires
with regards to tread quality, tire traction and
temperature characteristics. The quality grad-
ing assessment is made by the manufacturer
following specifications from the U.S. govern-
ment. The ratings are molded into the sidewall ofthe tire.
Recommended tire pressures
The recommended tire pressure applies to the
tires mounted at the factory.
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires on a fully loaded vehicle and for the maxi-
mum permissible vehicle speed.
The tire pressure table contains the recommen-
ded pressures for cold tires for various operat-
ing conditions, i.e. differing load and speed con-
ditions.
Increased vehicle weight due to optional
equipment
The combined weight of all standard and
optional equipment available for the vehicle,
regardless of whether it is actually installed on
the vehicle or not.
Rim
This is the part of the wheel on which the tire is
mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The gross
axle weight rating can be found on the vehicle
identification plate on the B-pillar on the driver's
side.
Speed rating
The speed rating is part of the tire identification.
It specifies the speed range for which the tire is
approved.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight of
the vehicle including fuel, tools, the spare wheel,
accessories installed, occupants, luggage and
the drawbar noseweight, if applicable. The gross
vehicle weight must not exceed the gross vehi-
cle weight rating GVWR as specified on the vehi-
cle identification plate on the B-pillar on the
driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of the
vehicle including all accessories, occupants,
fuel, luggage and the drawbar n
oseweight, if
applicable). The gross vehicle weight rating is
specified on the vehicle identification plate on
the B-pillar on the driver's side.
Maximum loaded vehicle weight
The maximum weight is the sum of:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-
sponds to 1 psi. Another unit for tire pressure is
bar. 100 kilopascals (kPa) are the equivalent of
1 bar.
Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall of
the tire. This specifies the load-bearing capacity
more precisely.
Curb weight
The weight of a vehicle with standard equipment
including the maximum capacity of fuel, oil and
coolant. It also includes the air-conditioning sys-
tem and optional equipment if these are instal-
led in the vehicle, but does not include passen-
gers or luggage.
Maximum load rating
The maximum tire load is the maximum permis-
sible weight in kilograms or lbs for which a tire is
approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one tire.
Maximum load on one tire
Maximum load on one tire. This is calculated by dividing the maximum axle load of one axle by
two.
All about wheels and tires351
Wheels and tires
Z

XClean the wheel and wheel hub contact sur-
faces.
XSlide the wheel to bemounted onto the align-
ment boltand push iton.
XTighten the wheel bolts unt ilthey are finger-
tight.
XUnscrew the alignment bolt.
XTighten the last wheel boltuntil it is finger-
tight.
Lowering the vehicle
GWAR NING
The wheels could work loose ifthe wheel nuts
and bolts are not tightened to the specifie d
tightening torque. There isa risk of acc ident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel ischanged.
XTurn the crank of the jack counter-clock wise
unt ilthe veh icle isonce again standing firmly
on the ground.
XPlace the jack to one side.
XTighten the wheel bolts evenly ina crosswise
pattern inthe sequence indicated (: toA). The tightening torque must be
111lb-ft
(1 50 Nm) .
XTurn the jack back to its initial position.
XStow the jack and the rest of the vehicle tools
in the trunk again.
XMercedes-AMG vehicles and vehicles
with AMG equipment: insert the cover into
the outer sill.
XCheck the tire pressure of the ne wlymounted
wheel and adjust it if necessary.
Observe the recommended tire pressure
(
Ypage 336).
When you are driving with the collapsible spare
wheel mounte d,the tire pressure loss warning
system or the tire pressure monitor cannot func-
tion reliably. Only restart the tire pressure loss
warning system or tire pressure monitor when
the defective wheel has been replaced with a
new wheel.
Vehicles with a tire pressure controlsys-
tem: all installed wheels must be equipped with
functioning sensors.
Wheel/tire combination
You can ask for information regarding permitted wheel/t ire combinations at an authorized
Mercedes-Benz Center.
!For safety reasons, Mercedes-Benz recom-
men dsthat you only use tires and wheels
whic h have been approved byMercedes-Benz
specifically for your vehicle.
These tires have been specially adapted for
use with the control systems, such as ABS or
ESP
®, and are marked as follows:
RMO = Mercedes-Benz Original
RMOE = Mercedes-Benz Original Extended
(tires featuring run-flat characteristics)
RMO1 = Mercedes-Benz Original (only cer-
tain AMG tires)
Mercedes-Benz Original Extended tires may
only beused on wheels that have been spe-
cifically approved by Mercedes-Benz.
Only use tires, wheels or accessories tested
and approved by Mercedes-Benz. Certain
characteristics, e.g. handling, vehicle noise
emissions or fuel consumption, may other-
wise be adverselyaffected. In addition, when
driving with a load, tire dimension variations
could cause the tires to come into contact
Wheel/tire combination357
Wheels and tires
Z